Genuine OEM Audi Engine Coolant Hose, part number 9J1121545A. This hose is an essential component of the engine cooling system, responsible for transporting coolant between various engine components to regulate temperature. It is designed for specific routing within the engine bay. Weighing 0.089 kg, this hose is constructed from durable, heat-resistant materials. Using a genuine OEM coolant hose ensures proper fit, resistance to high temperatures and pressures, and chemical compatibility with engine coolants, preventing leaks and maintaining optimal engine operating temperatures.